Two-weave head motion



E. R. HOLMES TWO-NEAVE HEAD MOTION Filed June 25, 1924 Patented Dec. 9, 1924.

NLIT'ED TSES @OFF ICE.

'lEEBRIDGEiR-HOLMEOFLWORCESTER, MQASSACHUSETTS, ASSIGNOR TO CROMPTON & KNOWLES' ZOOT/I `WORKS, UF' WORCESTER,MASSACHUSETT A CORPORATION OF ".MASSCHUSETTS.

I:Two-'weave HEAD MOTION.

Application filed, June 25; .1924. VSeriell No. 722,405.

To alle() hom tfmng/ concern -aritizeirf the United States, .residing at flldfvorcesteryin the'county otfVVorcesterA and "Stateof fh'lassa'chusetts, have invented a fnewzandlinseful Two-leave Head .Motiom fof 'whiehzV the following is f a-` specification.

This-'inventionrelates to improvements in s1patternwmeohanism forlooms and morepar- 24'110 ticula'rly"to a two vweave Vmotion such-as is l i `employed Afor wea-ving; buttonholes.

.l 1nfsuch'meehanisms there are usually provvided two pattern surfaces and the harness 4leversy are-control-ledL by devices `which are weave 'Ithe L other pattern surface is brought fintoiplaywafnd the ,one previously active ceases to control theharness frames.

wIt fis. the principal object of: mypresent invention "to lprovide a vtwo-weave` motion whereinfthe vibratorlevers have pivoted thereon members, -eachof`y whiclrhas two..

pattern runsnand wherein the position -of -.andfcontrolledasV to .position by a crossrod.

Another object of :inventionnsr to wstrengthen `the vibratonlevers 'by making will be seen that I have providedloom frame -withanarch 11 `to-whichis secured the frame 12 of the head.

l Upper andlower cylinders 13. and 1%, respectively, rotate 4ini the head and are driven ,by wellknown `mechanism .(not shown)v soas to rotate in .opposite-directions. .A series of harness le- .versyone owhieh is indicated at 15, -is piv oted on pin-16 carried by the arches and each.harnesslever is `providedwith a connector 17 pivoted. to vibrator gear 18.

. Tliiere .is one vibrator lgear. Vfor each harness leven and each gear yis mounted on a vibrator lever .19 which 1s pivoted on heel pinj'20 .secured to the `fra-Ine 12.

llheshaft` 21 on whichthe upper cylinder isn1onntedis extended to-reeeive a pinion i 30 :thesame of two side plates riveted together i and ispacedi i apart snfhciently ,tov accommodatev the f' pivoted and.-sliding members` f which effect thelchangez of'weave. l

. It is a stillurtlier..ob]ect ofriny invenf'35 tion to provide for the removali ofthei pivoted and sliding-membersfrom the two part .f

`1vibratorlever` so that these,` parts--may tbe v:talf'en outl when necessary without vdisman-` .t-ling... the entire vibratore. lever.

f W ith these; and other objects i in view ,-which will `:appear as the description prow ceeds, myfin-vention resides in the combina-` Fig., 1 is afront elevation of ahead .mov

` tion `vhavingmy invention appliedzthereto, 'z Eig. 2 is a :detailed section-.of aeportion rl'o'wof the vibrator lever.` and .theflassociated pattern surfaces; *partsabeingremoved to show tthe 4 nivo-ted and;sl1dmg,..members .more

fclearly,

f Fig. 3 is atop yplan view ofthe vibrator 55` shown 1in Eig.. 2,

22` which `meshes with a gear 23 pivoted lon aistud 21ixed Ato thehead frame. Rigid withthe gear 23 1s a cam 25` which is driven by thepinion and, gear 23 so as to make` one revolution every other picko-the loom.-

v.Asshown in Figs:` l-.and 4I haveprovided a. connector 26, the yinner end of which..A

islislottedas at 27.130 receive the extension oi' stud 24 to guide the connector. lnorder -to-reciprocate the connector thelatter` is providedA with a pair` of studs-2S `and 29,A re- .;speCtiVely, which contact 4with opposite...`

sidesoifthecam 25 sothatas the latter.I ro- .tates1the V,connector 1s..moved positively in both directions. Intermediate the ends :of

`the connector there is provided. acstud which extends to one side 4ofthe connector i1 to pivotally support orked lever. 31. The enter` end .of the connector 26 is provided with a-slot 32 which receives .the end `of .Y shaft 20. Thus it will be` seen that connec- .torv 26 .is reciprontted .positively .along ag .lixed line. of4 motion, and carries pvoted lever 31.

y: The arm 33. is pivoted on heel pin20 and .is rigid with an oscillatinglever 34 having notches and '36. respectively. `Pivotally `mounted as at 37.011 an extension 'of the head frame is a lever BBhaving a depend Vingarm 39 by which it maybe oscillated through connector 40 and .having a second arm 41 Vwhichcooperates with the iiattened surface 42 formed on the lower side of lever 3l. By oscillating lever 38 the lever 3l may be lowered to cause engagement between upper detent 43 and notch 35 or raised as shown in the drawing to cause engagement between detent 44 and notch 36. Depending` upon the position of lever 31 the lever 34 will be rocked to move arm 33 either toward or from the cylinders. Connected to arm 33 is a connector 45 on which is mounted pin 46 extending across the head and placed for engagement with the slidingl members to be described hereinafter.

Pattern surfaces 47 and 48, respectively, are driven in opposite directions through the gears 49 and 50, respectively, which are mounted on shafts 51 and 52, respectively. The latter are driven by any appropriate mechanism (not shown) and cooperate with the pivoted or oscillating member to be described hereinafter.

The matter thus far described is of the usual construction and forms no part of my present invention, being an adaptation of the well known Knowles head.

My invention has more particular reference to the construction of the vibrator lever and the pivoted and sliding members carried thereby as shown in Figs. 2, 3, 4 and 5. As shown in Fig. 3 each vibrator is composed of a pair of side plates which are riveted together at various points and spaced apart by blocks 61 at the ends respectively of the lever and studs 62. Pivotally mounted on the lower portion of each vibrator lever and limited as to angular motion by studs 62 is a chain engaging member 63 having two runs 64 and 65, respectively. Each run is shaped so as to be eccentric with its corresponding pattern cylinder when in operative relationship therewith. Accordingly, surface 64 is eccentric with shaft 51 when the parts are in the position shown in Fig. 2 and when the member 63 is moved to the other position surface 65 will be eccentric with shaft 52. The chain engaging member 63 has in the central portion thereof a surface 66 concentric with stud 67 about which the member 63 moves as a pivot. The chain engaging member is provided with inclined surfaces 68 and 69, respectively, which merge with i plane surfaces 70 and 71, respectively.

The device for oscillating and positioning the chain engaging member 63 is shown generally at 72 and comprises a sliding member having oppositely extending arms 73 and 74, respectively, and a depending central portion 75 the lower surface of which is straight and substantially parallel to the upper surfaces of arms 73 and 74. These arms have sliding contact with the lower surfaces of blocks 76 which are riveted to the side members of the vibrator lever and cooperate with the arms of the sliding member to holdk the lower edge of the latter in contact with the concentric surface 66 of the cam 63.

The sides of the lower projection 75 are shaped and proportioned to engage the inclined surfaces 68 and 69 so that as member 72 reciprocates the member 63 will be oscillated on its pivot 67.

Under normal conditions the rod 26 will be moved to one eXtreme of its motion and will move all of the positioning slides 72 therewith by Contact with the upstanding ears 78 formed on the slides. In the position shown in Fig. 2, the oscillating members 63 will be moved so that they cooperate with pattern surface 47. The parts will remain in this position until it is desired to effect a change in the weave, at which time the rod 46 will be given a motion to the right as viewed in Fig. 2, the effect of which will be to bring the lower portions of all the slides in contact with surfaces 69 of the members 63, so that all of said members 63 will be oscillated to move surfaces 64 to raised position and to lower surfaces 65 into operative contact with pattern surface 48. It is to be understood that these two pattern surfaces are designed so as to produce two distinct weaves.

Fig. 5 illustrates the manner of mounting the chain engaging member 63 wherein it will be seen that the rivet 67 is surrounded by a bushing 77 which serves to space the side members 60 and is slightly longer than the thickness of the chain engaging member so that the latter may move thereon freely without frictional contact with the sides of the vibrator.

When it is desired to remove either. the sliding or the chain engaging member `rivet. 67 will be driven out, after which the bushing 77 may be removed with the chain engaging member 63 and the sliding member may then be removed by passing the same between the studs 62.

From the foregoing it will be seen that I have provided a vibrator lever for use with a two weave motion constructed of two side plates between which are located positioning and pivoted members which are free to have operative movements but confined as to lateral position by the side plates. It will also be noticed that the sliding member is held in position by being at all times in contact with some portion or another of the concentric surface 66, the sliding member having a rolling action with the concentric surface as well as a cam action with the inclined surfaces 68 and 69. It will further be noted that the lugs 76 and the lifting surfaces 70 and 71 of the chain engaging member are so placed with respect to the sliding member that the strain of lifting the vibrator leverpasses in a straight line from the chain to the bosses'7 6 by pass- Laia/427 ing through the lower portion 7 5 ofmember Having thus described my invention it will be apparent that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention, and I do not wish to be limit-ed to the details herein disclosed, but what I claim is:

1. In a pattern mechanism having a pair of pattern surfaces and a reciprocable controlling member, a vibrator lever having spaced side plates, a sliding` positioner movable between the sides of the vibrator lever and having portions to engage the vibrator lever to lift the same, a pivoted member mounted on the vibrator lever and having surfaces to be engaged one at a time by the sliding positioner, said pivoted member hav ing surfaces to engage the aforesaid pattern surfaces, and means to move the sliding member as the controller is reciprocated to oscillate the pivoted member.

2. In a pattern mechanism having a pair of pattern surfaces and a controller capable of assuming' two positions, a vibrator lever formed of side plates, spaced bosses on said e vibrator between the plates, a sliding positioner member reciprocable with the control member and having portions in contact in all positions thereof with the two bosses, a pattern surface engaging lever pivoted to the vibrator and having two pattern engag ing surfaces to engage said pattern surfaces one at a time, means to move said pivoted member as the sliding positioner is reciprocated, and means including a portion of the pivoted member concentric with the pivot thereof to preserve contact between the sliding and the pivoted members in all positions thereof.

3. In a pattern mechanism having a pair of spaced pattern surfaces and a reciprocable controlling' member, a vibrator lever extending over the pattern surfaces and having bosses thereon substantially above the centers of the pattern surfaces, a sliding positioning member in contact with said bosses and moved by said reciprocable controlling member, a pattern surface en aging member pivoted to the vibrator an having portions extending over each pattern surface,

one of said portions to be operatively po sitioned with respect to one of the pattern surfaces at a'time only, said sliding member movable to have a portion thereof extending between one of the bosses and the pattern surface directly therebelow and in contact with that portion of the pivoted pattern surface engaging member operatively positioned with respect to the last named pattern surface.

(JC. In a pattern mechanism having a pair of pattern surfaces and a reciprocable con trolling member, a vibrator lever having a pair of spaced bosses thereon, one boss being over one of the pattern surfaces and the other boss being over the other pattern surface, a pattern surface engaging member pivoted to the vibrator and having portions extending over each pattern surface, portions being operatively positioned with but one of the pattern surfaces at a time, and a sliding positioning member operatively related to the said controlling member to move said pattern surface engaging member on the pivot thereof, said sliding member having a portion to extend between a portion of the chain engaging member operatively positioned for one of the pattern surfaces and the boss on the vibrator over the last named pattern surface, and a surface formed on the pivoted member concentrically of the pivot thereof and in contact with a portion of said sliding member in all positions of said pivoted and sliding members.

5. A vibrator lever for two weave pattern mechanism having a pair of spaced side plates, lifting bosses carried thereby, a pattern surface engaging member pivoted thereto and having a pair of oppositely extending pattern surface engaging arms, a sliding positioning member having two operative points of contact with the pattern surface engaging member, and a surface formed on the pivoted pattern surface engaging member concentric with the pivot thereof and in contact with a portion of he sliding member in all positions of said sliding and pivoted members.

In testimony whereof I have hereunto affixed my signature.

ELBRIDGE R. HOLMES. 

